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must be called in the pass's constructor. This function uses static dependency declarations to recursively initialize the pass's dependencies. Clients that only create passes through the createFooPass() APIs will require no changes. Clients that want to use the CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h before parsing commandline arguments. I have tested this with all standard configurations of clang and llvm-gcc on Darwin. It is possible that there are problems with the static dependencies that will only be visible with non-standard options. If you encounter any crash in pass registration/creation, please send the testcase to me directly. llvm-svn: 116820
74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
//===- LibCallAliasAnalysis.h - Implement AliasAnalysis for libcalls ------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the LibCallAliasAnalysis class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ANALYSIS_LIBCALL_AA_H
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#define LLVM_ANALYSIS_LIBCALL_AA_H
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#include "llvm/Analysis/AliasAnalysis.h"
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#include "llvm/Pass.h"
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namespace llvm {
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class LibCallInfo;
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struct LibCallFunctionInfo;
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/// LibCallAliasAnalysis - Alias analysis driven from LibCallInfo.
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struct LibCallAliasAnalysis : public FunctionPass, public AliasAnalysis {
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static char ID; // Class identification
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LibCallInfo *LCI;
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explicit LibCallAliasAnalysis(LibCallInfo *LC = 0)
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: FunctionPass(ID), LCI(LC) {
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initializeLibCallAliasAnalysisPass(*PassRegistry::getPassRegistry());
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}
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explicit LibCallAliasAnalysis(char &ID, LibCallInfo *LC)
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: FunctionPass(ID), LCI(LC) {
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initializeLibCallAliasAnalysisPass(*PassRegistry::getPassRegistry());
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}
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~LibCallAliasAnalysis();
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ModRefResult getModRefInfo(ImmutableCallSite CS,
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const Location &Loc);
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ModRefResult getModRefInfo(ImmutableCallSite CS1,
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ImmutableCallSite CS2) {
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// TODO: Could compare two direct calls against each other if we cared to.
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return AliasAnalysis::getModRefInfo(CS1, CS2);
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}
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virtual void getAnalysisUsage(AnalysisUsage &AU) const;
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virtual bool runOnFunction(Function &F) {
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InitializeAliasAnalysis(this); // set up super class
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return false;
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}
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/// getAdjustedAnalysisPointer - This method is used when a pass implements
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/// an analysis interface through multiple inheritance. If needed, it
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/// should override this to adjust the this pointer as needed for the
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/// specified pass info.
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virtual void *getAdjustedAnalysisPointer(const void *PI) {
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if (PI == &AliasAnalysis::ID)
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return (AliasAnalysis*)this;
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return this;
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}
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private:
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ModRefResult AnalyzeLibCallDetails(const LibCallFunctionInfo *FI,
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ImmutableCallSite CS,
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const Location &Loc);
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};
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} // End of llvm namespace
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#endif
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